RMS Voltage Calculator
Convert sine wave peak voltage to RMS voltage
Calculate RMS
Reset
RMS Voltage Formula
Vrms = Vpeak / sqrt(2)
Vpp = 2 Vpeak
RMS voltage gives the equivalent DC value for power heating in a resistor. For a pure sine wave, divide peak voltage by square root of 2.
⚠ This formula assumes a sinusoidal waveform. Other waveforms need different RMS relationships.
What Is RMS Voltage?
RMS voltage is the effective voltage of an AC waveform. It is the value used for comparing AC power to equivalent DC power.
Effective Value
RMS relates directly to heating power.
Sine Wave Rule
Vrms equals peak divided by sqrt(2).
Peak-to-Peak
Vpp is twice the peak amplitude.
Measurement Use
Meters often display RMS for AC signals.
Example: For Vpeak = 10 V, Vrms = 10 / sqrt(2) = 7.071 V and Vpp = 20 V.
Applications of RMS Voltage
AC Power
Oscilloscopes
Audio Signals
Power Calculations
Electrical Measurement
Frequently Asked Questions
What is an RMS voltage calculator?▼
It converts sine wave peak voltage into RMS voltage, which represents equivalent DC heating value.
What is the RMS voltage formula?▼
For a sine wave, Vrms = Vpeak / sqrt(2).
How do I use this Vrms calculator?▼
Enter the peak voltage and calculate. The tool returns RMS voltage and peak-to-peak voltage.
Is RMS voltage the same as average voltage?▼
No. RMS is based on square root of mean square value, while average voltage is a different waveform measure.
Where is RMS voltage used?▼
It is used in AC power, oscilloscopes, audio signals, electrical measurements, and power calculations.
Free online calculators and tools covering mathematics, unit conversion, text processing, and daily life. Accurate, fast, mobile-friendly, and completely free to use.
© 2026 IP331.com — Free Online Tools. All rights reserved.
About
·
Contact
·
Privacy Policy
·
Cookie Policy
·
Terms of Use
·
Disclaimer
·
Sitemap